The Tennis Anti-Doping Programme Working Group has announced that the biological passport will be introduced into the sport in order to improve detection of illegal drug taking.

The system, which is used in a number of sports including cycling and has been backed by stars Andy Murray and Roger Federer, will increase the number of blood tests taken each year.

ATP executive chairman and president Brad Drewett said: "The ATP has always rigorously supported the Tennis Anti-Doping Programme and believes that the move toward the Athlete Biological Passport is the appropriate step for tennis at this time.

"The players have been clear that they support increased investment in anti-doping and we feel that this is the most effective way to show the world that tennis is a clean sport."

WTA chief executive Stacey Allaster added: "The WTA is proud of its long-standing efforts in anti-doping and believes that it is in the best interests of our sport to adopt the Athlete Biological Passport and to increase both blood and out-of-competition testing."

The International Tennis Federation and the Grand Slam tournaments have all agreed to adopt the anti-doping system.